Question

A car battery has _______resistance than a dry cell.

Answer 1

The term "car battery" refers to a rechargeable battery that is used to start a vehicle. Its primary function is to provide an electric current to the electric-powered starter motor, which then starts the chemically-fueled internal combustion engine that drives the car.

Complete answer:
A battery's internal resistance (IR) is known as the resistance to current flow inside the battery. Electronic resistance and ionic resistance are the two main factors that influence a battery's internal resistance. The total effective resistance will be defined as the electronic resistance plus the ionic resistance.

Real batteries are made of materials with resistivities greater than zero. As a result, a real battery has an internal resistance in addition to being a pure voltage source. A pure voltage source is often referred to as an emf source (which stands for electromotive force). Of instance, volts are used to calculate emf.

An emf connected in series with a resistor can be used to model a battery (which represents its internal resistance). A normal dry cell is rated at $1.5\,V$ and $100\,MA$. As a result, if we short–circuit a dry cell, nothing very bad can happen.

A car battery, on the other hand, is usually rated at $12\,V$ and $200\,A$ . A car battery would obviously have a lower internal resistance than a dry cell. As a result, short–circuiting a car battery will have disastrous consequences.

Note: Internal resistance is described as the resistance to current flow provided by the cells and batteries themselves, resulting in heat generation. Ohms was used to assess internal resistance.